<template>
  <div class="header">
    <!-- 折叠按钮 -->
    <div
      class="collapse-btn"
      @click="collapseChage"
    >
      <i class="el-icon-menu" />
    </div>
		
    <div class="logo">
      后台管理系统
    </div>
    <div class="header-right">
      <div class="header-user-con">
        <!-- 全屏显示 -->
        <div
          class="btn-fullscreen"
          @click="handleFullScreen"
        >
          <el-tooltip
            effect="dark"
            :content="fullscreen?`取消全屏`:`全屏`"
            placement="bottom"
          >
            <i class="el-icon-rank" />
          </el-tooltip>
        </div>
        <!-- 消息中心 -->
        <div class="btn-bell">
          <el-tooltip
            effect="dark"
            :content="message?`有${message}条未读消息`:`消息中心`"
            placement="bottom"
          >
            <router-link to="/tabs">
              <i class="el-icon-bell" />
            </router-link>
          </el-tooltip>
          <span
            class="btn-bell-badge"
            v-if="message"
          />
        </div>
        <!-- 用户头像 -->
        <div class="user-avator">
          <img mode="cover" width="100%" :src="getFileUrl(userInfo.headimg,'image')">
        </div>
        <!-- 用户名下拉菜单 -->
        <el-dropdown
          class="user-name"
          trigger="click"
          @command="handleCommand"
        >
          <span class="el-dropdown-link">
            {{ userInfo.nickname }} <i class="el-icon-caret-bottom" />
          </span>
          <el-dropdown-menu slot="dropdown">
            <el-dropdown-item
              v-for="(item,index) in tabs"
              :command="item.url"
              :key="index"
            >
              {{ item.name }}
            </el-dropdown-item>
            <el-dropdown-item
              v-if="hasLogin"
              divided
              command="loginout"
            >
              退出登录
            </el-dropdown-item>
            <el-dropdown-item
              v-if="!hasLogin"
              divided
              command="login"
            >
              立即登录
            </el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>
      </div>
    </div>
  </div>
</template>
<script>
    // import bus from '../common/bus';
    export default {
        data() {
            return {
                logo:require("../../assets/images/logo.png"),
                tabs:[
                    {
                        name:"关于作者",
                        url:'https://gitee.com/wokaixin'
                    },{
                        name:"项目服务端thinkphp",
                        url:'https://gitee.com/wokaixin/php-admin-api'
                    },{
                        name:"项目前端vue+element",
                        url:'https://gitee.com/wokaixin/vue-admin/tree/admin/'
                    }
                ],
                collapse: false,
                fullscreen: false,
                name: 'linxin',
                // message: 2
            }
        },
        mounted() {
            // console.log(this.$store.getters.hasLogin)
        	
        },
        created() {
        	// console.log(this.$store.getters.hasLogin)
        },
        computed:{
            hasLogin(){return this.$store.getters.hasLogin
            },
            message(){
              return   this.$store.getters.message;
            },
            userInfo(){
                let userinfo = this.$store.getters.userInfo;
                return userinfo;
            }
        },
        methods:{
            getFileUrl(url,type){
                if(url){
                    return this.$config.getFileUrl(url,type);   
                }else{
                    return this.logo;
                }
                    
            },
            // 用户名下拉菜单选择事件
            handleCommand(command) {
                if(command && command.slice(0, 4) == "http"){
                       window.open(command);
                }else if(command == 'loginout'){
                    this.$store.commit('loginOut');
                    this.$router.push('/login');
                }else{
                    this.$router.push('/login');
                }
            },
            // 侧边栏折叠
            collapseChage(){
                this.collapse = !this.collapse;
				this.$emit("setCollapse","")
            },
            // 全屏事件
            handleFullScreen(){
                let element = document.documentElement;
                if (this.fullscreen) {
                    if (document.exitFullscreen) {
                        document.exitFullscreen();
                    } else if (document.webkitCancelFullScreen) {
                        document.webkitCancelFullScreen();
                    } else if (document.mozCancelFullScreen) {
                        document.mozCancelFullScreen();
                    } else if (document.msExitFullscreen) {
                        document.msExitFullscreen();
                    }
                } else {
                    if (element.RequestFullscreen) {
                        element.RequestFullscreen();
                    } else if (element.webkitRequestFullScreen) {
                        element.webkitRequestFullScreen();
                    } else if (element.mozRequestFullScreen) {
                        element.mozRequestFullScreen();
                    } else if (element.msRequestFullscreen) {
                        // IE11
                        element.msRequestFullscreen();
                    }
                }
                this.fullscreen = !this.fullscreen;
            }
        },
        mounted(){
            if(document.body.clientWidth < 1500){
                this.collapseChage();
            }
        }
    }
</script>
<style scoped>
    .header {
        position: relative;
        box-sizing: border-box;
        width: 100%;
        height: 70px;
		line-height: 70px;
        font-size: 22px;
        color: #fff;
    }
    .collapse-btn{
        float: left;
        padding: 0 21px;
        cursor: pointer;

    }
    .header .logo{
        float: left;
        width:250px;

    }
    .header-right{
		display: flex;
		justify-content: flex-end;
        padding-right: 50px;
    }
    .header-user-con{
        display: flex;
		justify-content: center;
        align-items: center;
    }
    .btn-fullscreen{
        transform: rotate(45deg);
        margin-right: 5px;
        font-size: 24px;
    }
    .btn-bell, .btn-fullscreen{
        position: relative;
        border-radius: 15px;
        cursor: pointer;
    }
    .btn-bell-badge{
        position: absolute;
        right: 0;
        top: 10px;
        width: 8px;
        height: 8px;
        border-radius: 4px;
        background: #f56c6c;
        color: #fff;
    }
    .btn-bell .el-icon-bell{
        color: #fff;
    }
    .user-name{
        margin-left: 10px;
    }
    .user-avator{
        margin-left: 20px;
    }
    .user-avator img{
        display: block;
        width:40px;
        height:40px;
        border-radius: 50%;
    }
    .el-dropdown-link{
        color: #fff;
        cursor: pointer;
    }
    .el-dropdown-menu__item{
        text-align: center;
    }
</style>
